THE FINAL VOTE R/C Contest Board 1976-1977 competition rules came out just after sent last months column havent seen dig out January 1976 Model Aviation take peek pages 61-64 surface changes appear involve minor revisions Pattern sched ules renaming classes B C D Novice Advanced Expert Masters However closer examina tion shows maneuvers Novice Advanced classes must per formed prescribed upwind-downwind sequence will probably cause some people including little grief because have gotten used doing certain maneuvers particular direction no mat ter way wind blows changes Pattern schedules look good doubt anyone especially judges will mourn pass ing Figure Eight old Class schedule didnt qualify good maneuver because difficult judge uniformly new maneuvers Novice class will take some getting used because require something unusual fliers just getting Pattern flying Outside Loop maneuver will show stopper some fliers have seldom pushed elevator stick forward Beginner-type airplanes dont generally fly too well inverted because usually have substantial dihedral provide lateral stability airplane lot dihedral flown inverted dihedral destabilizing beginner dares try outside loop inverted flying type airplane soon decides its risky business pilot moves up beginners airplane better suited Pattern work will probably edgy about first few outside loops bit practice should cure other maneuver will also take some practice getting used Two-Point Roll However should lot easier get used outside loop Touch-and-Go maneuver has al ways problem regular flying field has 200-ft-wide 4000-ftlong runway seldom practice maneuver limited area Consequently runway contest 30 ft 150 ft tend clutch Needless say removal Touch-and-Go delight ed However thinking about Nonrolling Figure M its place brought back down again Four-Point Roll FAI Horizon tal Eight removed Advanced class difficult perform well easy judge two primary criteria maneuver selection Slow Roll Double Immelmann also meet criteria cant really complain about switch except personal level Four-Point Roll FAI Hori zontal Eight just become comfortable Cant have everything real criticism new Ad vanced Pattern inclusion TwoPoint Roll seems appropriate maneuver Novice class sufficiently difficult relative other maneuvers Advanced class Id like see Four-Point Roll put back pattern place Two-Point Roll Advanced class Expert pattern basically FAI pattern Non-rolling Figure M removal Eight-Point Roll Running Eight very few contests last year old Class C pattern flown should wel 4 ROOT CHORD r FIGURE 1 Ron Van Pulte Tom Mahon poses proudly vintage KGKovel/Grant 10-lb bird really performs OS 60 Schnuerle Original Brown Junior appeared MAN 1934 come change Master Pattern full FAI Pattern will probably con tinue most-used contests around country received very nice letter Kemp Bunting R/C Category Director Nats Kemp corrected statement two three fliers remaining near end Round 6 heavy winds hit said .. round D Pattern Qualifying can celled because longest line seven planes fly ince Site B longest line must have Site assumption lines nearly must have wrong Last month promised present technique calculating center mass location model Because us likes set up airplane differently calculated center mass should considered starting point test flying technique guarantees air plane will stable pitch maneuverability required after test flights center mass should moved aft calculated point technique accurate airplanes swept tapered both wings horizontal tails real limitation wing tail leading trailing edges straight technique set up monowing airplanes enough requests similar technique biplane airplanes Ill present later column Lets start computing aerody namic center wing Fig shows half swept wing no leading edge sweep dimension D will zero taper ratio T ratio tip chord root chord T tipehord root chord continued page 81 0 TIP CHORD -I 16 Model Aviation THIS NEW RECEIVER KIT WILL WORK WITH YOUR TRANSMITTER improved Digital Commander 1-8 Receiver Kit features flat pack single board design space age CMOS IC decoder gives eight channel capability will operate either three four wire neg ative positive pulse servos Minimum drain 7 ma maximum noise immunity obtained CMOS ICs receiver will work modern digital trans mitter same frequency no matter what brand cause build yourself learn good deal about operation system troubleshoot Receiver kit less connectors switch batteries Available 27 53 72/75 MHz frequencies jection molded case measures 13/16 X 1 3/8 X 2 7/16 Weight 175 oz case connectors Get 76 catalog complete listing Digital Commander flite pak system kits 12G18 Digital Commander CMOS Single Deck Receiver Kit $3795 Add $500 72 MHz [v32][b-1-10-1-10]] Please send complete catalog Enclosed W$100 refunded first order Add $ 50 1st class mail return N g EUU sine Address BOX 511 E HIGGINSVILLE MO 64037cty State Zip RC Sport/Van Putte continued page 16 location aerodynamic center wing given X-wing X-wing distance location aero dynamic center wing aft wing root leading edge FL X-WING x Root chord T D__ Xwing 6\l / 3 \lTI location aerodynamic center horizontal tail computed same way wing calculations above sure include elevators cal culation Once youve located aerodynamic centers wing horizontal tail make sketch like Fig 2 symbol L distance between aerodynamic centers wing horizontal tail Compute area wing includ FIGURE 2 /77 /1 CENTER OF MASS XTAIL ft--a] ] ing ailerons call SW compute area horizontal tail including elevators call ST Hang hats because next equation X gives location desired airplane center mass meas ured leading edge wing root L ST Root chord V X Xwisgy5~15 1I \ lT/ calcuations carefully should have no problems Should run difficulty check step carefully good habit calculations inches square inches answer will come out inches correct solution escapes please drop line describe both airplane calculations good thing keep mind youre struggling through calculations technique accurate using could save new pride joy Good luck brief article follows writ ten Dave Strawser originally published Bulletin Eglin Aero Modellers typical hu morous informative articles appear numerous newsletters re ceive month remove Warp Foam Wing. Without Inducing self title article may puzzle April 1976 81 RC Sport continued some bit have ever gone through what have going through past couple weeks youll understand process building Gator Flea found necessary sheet foam wing cores blissful ignorance sheeted aid experi enced modeler result rather high degree wash-out right wing panel start insanity have unfortunately party beginning tried removing warp just soaking offending panel water blocking up reverse twist letting dry tried several times dismal lack success next attempt eliminate @#&* warp came form sneak attack Once again soaked wing panel blocked really neat change HAH soak clear dope instead water figured stupid wing wouldnt know difference didnt Several times didnt Dumb wing Finally through logic deductive process cool clear rational mind sheer desperation decided try fiber glass resin brushed coat resin panel blankety-blank warp wrapped panel waxed paper resin used cured waxed paper contact some resins epox ies might test first replaced panel blocks cut weighted down books used encyclopedias because recorded knowledge seemed impress wing favorably small amount opposite twist might necessary however Go easy doesnt take too much severity warp will decid ing factor hope spares some having wear funny jackets.. address 12 Connie Dr Shalimar Fla 32579 Jaguar/Morgan continued page 43 known under several trade names important factor get nice clean finish around edges covered pod can constructed accurately making sure snug fit cov ering material must cut away pod fits give epoxy something grip ls added being careful rear goes through bellcrank mount front misses spruce spars fixed sanded shape pod should covered tissue given four coats dope painted desired color scheme final ly given two coats good fuel-proofer elevator tailplane stage Depending upon type motor used center gravity will change desirable have near possible indicated spot Flying FAI Combat model art itself will know quick reactions good model/motor combination essential success art UK follow opponent times faster may sound difficult lot practice skillful antici pation will become second nature great tip small maneuvers near ground possible wait opponent hit ground FAI Combat art get several small cuts needs great patience skill kill method does apply avoided costs Have ever tried stay out way opponent over three-quarters boutnot easy task Jaguar very competitive model right hands world beater During last two years have flown design beaten previous six UK champions including Messrs Evans Tieman Hunt top Euro pean fliers year first time anyone has won UK Nationals Dutch Open International same year Its pedigree proved TWENTYSECOND ANNUAL TOLEDO RADIO CONTROL EXPOSITI ON TOLEDO SPORTS ARENA ONE MAIN STREET TOLEDO OHIO APRIL 23 &41976 FRIDAY9 AM TO B PM SATURDAY 9 AM TO 6 PM SUNDAY 9 AM TO 330 PM 4pm OPEN TO PUBLIC ALL THREE DAYS UNQUESTIONABLY THE WORLDS GREATEST RADIO CONTROL SHOW PRESENTED BY WEAK SIGNALS R/C CLUB P0 BOX 5772 TOLEDO OHIO 43613 82 Model Aviation
Edition: Model Aviation - 1976/04
Page Numbers: 16, 81, 82
THE FINAL VOTE R/C Contest Board 1976-1977 competition rules came out just after sent last months column havent seen dig out January 1976 Model Aviation take peek pages 61-64 surface changes appear involve minor revisions Pattern sched ules renaming classes B C D Novice Advanced Expert Masters However closer examina tion shows maneuvers Novice Advanced classes must per formed prescribed upwind-downwind sequence will probably cause some people including little grief because have gotten used doing certain maneuvers particular direction no mat ter way wind blows changes Pattern schedules look good doubt anyone especially judges will mourn pass ing Figure Eight old Class schedule didnt qualify good maneuver because difficult judge uniformly new maneuvers Novice class will take some getting used because require something unusual fliers just getting Pattern flying Outside Loop maneuver will show stopper some fliers have seldom pushed elevator stick forward Beginner-type airplanes dont generally fly too well inverted because usually have substantial dihedral provide lateral stability airplane lot dihedral flown inverted dihedral destabilizing beginner dares try outside loop inverted flying type airplane soon decides its risky business pilot moves up beginners airplane better suited Pattern work will probably edgy about first few outside loops bit practice should cure other maneuver will also take some practice getting used Two-Point Roll However should lot easier get used outside loop Touch-and-Go maneuver has al ways problem regular flying field has 200-ft-wide 4000-ftlong runway seldom practice maneuver limited area Consequently runway contest 30 ft 150 ft tend clutch Needless say removal Touch-and-Go delight ed However thinking about Nonrolling Figure M its place brought back down again Four-Point Roll FAI Horizon tal Eight removed Advanced class difficult perform well easy judge two primary criteria maneuver selection Slow Roll Double Immelmann also meet criteria cant really complain about switch except personal level Four-Point Roll FAI Hori zontal Eight just become comfortable Cant have everything real criticism new Ad vanced Pattern inclusion TwoPoint Roll seems appropriate maneuver Novice class sufficiently difficult relative other maneuvers Advanced class Id like see Four-Point Roll put back pattern place Two-Point Roll Advanced class Expert pattern basically FAI pattern Non-rolling Figure M removal Eight-Point Roll Running Eight very few contests last year old Class C pattern flown should wel 4 ROOT CHORD r FIGURE 1 Ron Van Pulte Tom Mahon poses proudly vintage KGKovel/Grant 10-lb bird really performs OS 60 Schnuerle Original Brown Junior appeared MAN 1934 come change Master Pattern full FAI Pattern will probably con tinue most-used contests around country received very nice letter Kemp Bunting R/C Category Director Nats Kemp corrected statement two three fliers remaining near end Round 6 heavy winds hit said .. round D Pattern Qualifying can celled because longest line seven planes fly ince Site B longest line must have Site assumption lines nearly must have wrong Last month promised present technique calculating center mass location model Because us likes set up airplane differently calculated center mass should considered starting point test flying technique guarantees air plane will stable pitch maneuverability required after test flights center mass should moved aft calculated point technique accurate airplanes swept tapered both wings horizontal tails real limitation wing tail leading trailing edges straight technique set up monowing airplanes enough requests similar technique biplane airplanes Ill present later column Lets start computing aerody namic center wing Fig shows half swept wing no leading edge sweep dimension D will zero taper ratio T ratio tip chord root chord T tipehord root chord continued page 81 0 TIP CHORD -I 16 Model Aviation THIS NEW RECEIVER KIT WILL WORK WITH YOUR TRANSMITTER improved Digital Commander 1-8 Receiver Kit features flat pack single board design space age CMOS IC decoder gives eight channel capability will operate either three four wire neg ative positive pulse servos Minimum drain 7 ma maximum noise immunity obtained CMOS ICs receiver will work modern digital trans mitter same frequency no matter what brand cause build yourself learn good deal about operation system troubleshoot Receiver kit less connectors switch batteries Available 27 53 72/75 MHz frequencies jection molded case measures 13/16 X 1 3/8 X 2 7/16 Weight 175 oz case connectors Get 76 catalog complete listing Digital Commander flite pak system kits 12G18 Digital Commander CMOS Single Deck Receiver Kit $3795 Add $500 72 MHz [v32][b-1-10-1-10]] Please send complete catalog Enclosed W$100 refunded first order Add $ 50 1st class mail return N g EUU sine Address BOX 511 E HIGGINSVILLE MO 64037cty State Zip RC Sport/Van Putte continued page 16 location aerodynamic center wing given X-wing X-wing distance location aero dynamic center wing aft wing root leading edge FL X-WING x Root chord T D__ Xwing 6\l / 3 \lTI location aerodynamic center horizontal tail computed same way wing calculations above sure include elevators cal culation Once youve located aerodynamic centers wing horizontal tail make sketch like Fig 2 symbol L distance between aerodynamic centers wing horizontal tail Compute area wing includ FIGURE 2 /77 /1 CENTER OF MASS XTAIL ft--a] ] ing ailerons call SW compute area horizontal tail including elevators call ST Hang hats because next equation X gives location desired airplane center mass meas ured leading edge wing root L ST Root chord V X Xwisgy5~15 1I \ lT/ calcuations carefully should have no problems Should run difficulty check step carefully good habit calculations inches square inches answer will come out inches correct solution escapes please drop line describe both airplane calculations good thing keep mind youre struggling through calculations technique accurate using could save new pride joy Good luck brief article follows writ ten Dave Strawser originally published Bulletin Eglin Aero Modellers typical hu morous informative articles appear numerous newsletters re ceive month remove Warp Foam Wing. Without Inducing self title article may puzzle April 1976 81 RC Sport continued some bit have ever gone through what have going through past couple weeks youll understand process building Gator Flea found necessary sheet foam wing cores blissful ignorance sheeted aid experi enced modeler result rather high degree wash-out right wing panel start insanity have unfortunately party beginning tried removing warp just soaking offending panel water blocking up reverse twist letting dry tried several times dismal lack success next attempt eliminate @#&* warp came form sneak attack Once again soaked wing panel blocked really neat change HAH soak clear dope instead water figured stupid wing wouldnt know difference didnt Several times didnt Dumb wing Finally through logic deductive process cool clear rational mind sheer desperation decided try fiber glass resin brushed coat resin panel blankety-blank warp wrapped panel waxed paper resin used cured waxed paper contact some resins epox ies might test first replaced panel blocks cut weighted down books used encyclopedias because recorded knowledge seemed impress wing favorably small amount opposite twist might necessary however Go easy doesnt take too much severity warp will decid ing factor hope spares some having wear funny jackets.. address 12 Connie Dr Shalimar Fla 32579 Jaguar/Morgan continued page 43 known under several trade names important factor get nice clean finish around edges covered pod can constructed accurately making sure snug fit cov ering material must cut away pod fits give epoxy something grip ls added being careful rear goes through bellcrank mount front misses spruce spars fixed sanded shape pod should covered tissue given four coats dope painted desired color scheme final ly given two coats good fuel-proofer elevator tailplane stage Depending upon type motor used center gravity will change desirable have near possible indicated spot Flying FAI Combat model art itself will know quick reactions good model/motor combination essential success art UK follow opponent times faster may sound difficult lot practice skillful antici pation will become second nature great tip small maneuvers near ground possible wait opponent hit ground FAI Combat art get several small cuts needs great patience skill kill method does apply avoided costs Have ever tried stay out way opponent over three-quarters boutnot easy task Jaguar very competitive model right hands world beater During last two years have flown design beaten previous six UK champions including Messrs Evans Tieman Hunt top Euro pean fliers year first time anyone has won UK Nationals Dutch Open International same year Its pedigree proved TWENTYSECOND ANNUAL TOLEDO RADIO CONTROL EXPOSITI ON TOLEDO SPORTS ARENA ONE MAIN STREET TOLEDO OHIO APRIL 23 &41976 FRIDAY9 AM TO B PM SATURDAY 9 AM TO 6 PM SUNDAY 9 AM TO 330 PM 4pm OPEN TO PUBLIC ALL THREE DAYS UNQUESTIONABLY THE WORLDS GREATEST RADIO CONTROL SHOW PRESENTED BY WEAK SIGNALS R/C CLUB P0 BOX 5772 TOLEDO OHIO 43613 82 Model Aviation
Edition: Model Aviation - 1976/04
Page Numbers: 16, 81, 82
THE FINAL VOTE R/C Contest Board 1976-1977 competition rules came out just after sent last months column havent seen dig out January 1976 Model Aviation take peek pages 61-64 surface changes appear involve minor revisions Pattern sched ules renaming classes B C D Novice Advanced Expert Masters However closer examina tion shows maneuvers Novice Advanced classes must per formed prescribed upwind-downwind sequence will probably cause some people including little grief because have gotten used doing certain maneuvers particular direction no mat ter way wind blows changes Pattern schedules look good doubt anyone especially judges will mourn pass ing Figure Eight old Class schedule didnt qualify good maneuver because difficult judge uniformly new maneuvers Novice class will take some getting used because require something unusual fliers just getting Pattern flying Outside Loop maneuver will show stopper some fliers have seldom pushed elevator stick forward Beginner-type airplanes dont generally fly too well inverted because usually have substantial dihedral provide lateral stability airplane lot dihedral flown inverted dihedral destabilizing beginner dares try outside loop inverted flying type airplane soon decides its risky business pilot moves up beginners airplane better suited Pattern work will probably edgy about first few outside loops bit practice should cure other maneuver will also take some practice getting used Two-Point Roll However should lot easier get used outside loop Touch-and-Go maneuver has al ways problem regular flying field has 200-ft-wide 4000-ftlong runway seldom practice maneuver limited area Consequently runway contest 30 ft 150 ft tend clutch Needless say removal Touch-and-Go delight ed However thinking about Nonrolling Figure M its place brought back down again Four-Point Roll FAI Horizon tal Eight removed Advanced class difficult perform well easy judge two primary criteria maneuver selection Slow Roll Double Immelmann also meet criteria cant really complain about switch except personal level Four-Point Roll FAI Hori zontal Eight just become comfortable Cant have everything real criticism new Ad vanced Pattern inclusion TwoPoint Roll seems appropriate maneuver Novice class sufficiently difficult relative other maneuvers Advanced class Id like see Four-Point Roll put back pattern place Two-Point Roll Advanced class Expert pattern basically FAI pattern Non-rolling Figure M removal Eight-Point Roll Running Eight very few contests last year old Class C pattern flown should wel 4 ROOT CHORD r FIGURE 1 Ron Van Pulte Tom Mahon poses proudly vintage KGKovel/Grant 10-lb bird really performs OS 60 Schnuerle Original Brown Junior appeared MAN 1934 come change Master Pattern full FAI Pattern will probably con tinue most-used contests around country received very nice letter Kemp Bunting R/C Category Director Nats Kemp corrected statement two three fliers remaining near end Round 6 heavy winds hit said .. round D Pattern Qualifying can celled because longest line seven planes fly ince Site B longest line must have Site assumption lines nearly must have wrong Last month promised present technique calculating center mass location model Because us likes set up airplane differently calculated center mass should considered starting point test flying technique guarantees air plane will stable pitch maneuverability required after test flights center mass should moved aft calculated point technique accurate airplanes swept tapered both wings horizontal tails real limitation wing tail leading trailing edges straight technique set up monowing airplanes enough requests similar technique biplane airplanes Ill present later column Lets start computing aerody namic center wing Fig shows half swept wing no leading edge sweep dimension D will zero taper ratio T ratio tip chord root chord T tipehord root chord continued page 81 0 TIP CHORD -I 16 Model Aviation THIS NEW RECEIVER KIT WILL WORK WITH YOUR TRANSMITTER improved Digital Commander 1-8 Receiver Kit features flat pack single board design space age CMOS IC decoder gives eight channel capability will operate either three four wire neg ative positive pulse servos Minimum drain 7 ma maximum noise immunity obtained CMOS ICs receiver will work modern digital trans mitter same frequency no matter what brand cause build yourself learn good deal about operation system troubleshoot Receiver kit less connectors switch batteries Available 27 53 72/75 MHz frequencies jection molded case measures 13/16 X 1 3/8 X 2 7/16 Weight 175 oz case connectors Get 76 catalog complete listing Digital Commander flite pak system kits 12G18 Digital Commander CMOS Single Deck Receiver Kit $3795 Add $500 72 MHz [v32][b-1-10-1-10]] Please send complete catalog Enclosed W$100 refunded first order Add $ 50 1st class mail return N g EUU sine Address BOX 511 E HIGGINSVILLE MO 64037cty State Zip RC Sport/Van Putte continued page 16 location aerodynamic center wing given X-wing X-wing distance location aero dynamic center wing aft wing root leading edge FL X-WING x Root chord T D__ Xwing 6\l / 3 \lTI location aerodynamic center horizontal tail computed same way wing calculations above sure include elevators cal culation Once youve located aerodynamic centers wing horizontal tail make sketch like Fig 2 symbol L distance between aerodynamic centers wing horizontal tail Compute area wing includ FIGURE 2 /77 /1 CENTER OF MASS XTAIL ft--a] ] ing ailerons call SW compute area horizontal tail including elevators call ST Hang hats because next equation X gives location desired airplane center mass meas ured leading edge wing root L ST Root chord V X Xwisgy5~15 1I \ lT/ calcuations carefully should have no problems Should run difficulty check step carefully good habit calculations inches square inches answer will come out inches correct solution escapes please drop line describe both airplane calculations good thing keep mind youre struggling through calculations technique accurate using could save new pride joy Good luck brief article follows writ ten Dave Strawser originally published Bulletin Eglin Aero Modellers typical hu morous informative articles appear numerous newsletters re ceive month remove Warp Foam Wing. Without Inducing self title article may puzzle April 1976 81 RC Sport continued some bit have ever gone through what have going through past couple weeks youll understand process building Gator Flea found necessary sheet foam wing cores blissful ignorance sheeted aid experi enced modeler result rather high degree wash-out right wing panel start insanity have unfortunately party beginning tried removing warp just soaking offending panel water blocking up reverse twist letting dry tried several times dismal lack success next attempt eliminate @#&* warp came form sneak attack Once again soaked wing panel blocked really neat change HAH soak clear dope instead water figured stupid wing wouldnt know difference didnt Several times didnt Dumb wing Finally through logic deductive process cool clear rational mind sheer desperation decided try fiber glass resin brushed coat resin panel blankety-blank warp wrapped panel waxed paper resin used cured waxed paper contact some resins epox ies might test first replaced panel blocks cut weighted down books used encyclopedias because recorded knowledge seemed impress wing favorably small amount opposite twist might necessary however Go easy doesnt take too much severity warp will decid ing factor hope spares some having wear funny jackets.. address 12 Connie Dr Shalimar Fla 32579 Jaguar/Morgan continued page 43 known under several trade names important factor get nice clean finish around edges covered pod can constructed accurately making sure snug fit cov ering material must cut away pod fits give epoxy something grip ls added being careful rear goes through bellcrank mount front misses spruce spars fixed sanded shape pod should covered tissue given four coats dope painted desired color scheme final ly given two coats good fuel-proofer elevator tailplane stage Depending upon type motor used center gravity will change desirable have near possible indicated spot Flying FAI Combat model art itself will know quick reactions good model/motor combination essential success art UK follow opponent times faster may sound difficult lot practice skillful antici pation will become second nature great tip small maneuvers near ground possible wait opponent hit ground FAI Combat art get several small cuts needs great patience skill kill method does apply avoided costs Have ever tried stay out way opponent over three-quarters boutnot easy task Jaguar very competitive model right hands world beater During last two years have flown design beaten previous six UK champions including Messrs Evans Tieman Hunt top Euro pean fliers year first time anyone has won UK Nationals Dutch Open International same year Its pedigree proved TWENTYSECOND ANNUAL TOLEDO RADIO CONTROL EXPOSITI ON TOLEDO SPORTS ARENA ONE MAIN STREET TOLEDO OHIO APRIL 23 &41976 FRIDAY9 AM TO B PM SATURDAY 9 AM TO 6 PM SUNDAY 9 AM TO 330 PM 4pm OPEN TO PUBLIC ALL THREE DAYS UNQUESTIONABLY THE WORLDS GREATEST RADIO CONTROL SHOW PRESENTED BY WEAK SIGNALS R/C CLUB P0 BOX 5772 TOLEDO OHIO 43613 82 Model Aviation